Borla 03-08 350Z True Dual Cat-Back Exhaust 2BOXES

This Borla cat-back exhaust system is built for the verified 2003-2008 Nissan 350Z application listed below. Select it by exact manufacturer part number 140045 and confirm the full engine, drivetrain, body, wheelbase, factory-exhaust, and Borla application notes before ordering.

Key Features

• Performance: Dyno-proven 15-20 HP and torque increases, 27% better flow than OEM, plus gains in fuel economy and engine longevity.
• Material: T-304 stainless steel construction for durability and corrosion resistance, with polished 4.5-inch angle-cut rolled-edge tips.
• Design: True dual cat-back with 2.25-inch mandrel-bent tubing, H-pipe balance, and straight-through S-Type mufflers for unrestricted flow and power throughout the powerband.
• T-304 austenitic stainless steel tubing and mufflers with polished T-304 tips; inlet 2.25 inches ID, outlet 2 inches OD, tailpipe 2 inches diameter.
• Weight Savings: Complete system weighs 12 pounds less than factory single exhaust for improved acceleration and agility.
• Easy bolt-on installation with no fabrication required; direct fit for all listed 350Z trims.

Fitment

Specifications

What’s Included

One new Borla product identified by manufacturer part number 140045. Clamps, hangers, gaskets, tips, pipes, tools, and companion parts are included only when expressly listed for this exact part number.

About Borla

Borla develops stainless-steel exhaust systems, mufflers, tips, pipes, and related components for vehicle-specific and universal performance applications. Product selection remains exact-application and exact-part-number specific.

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Browse the Borla collection for related exhaust systems and components.

Frequently Asked Questions

Will this Borla part fit my 2003-2008 Nissan 350Z?
That application is listed, but confirm the engine, drivetrain, body or cab style, wheelbase, factory exhaust layout, tip opening, and every Borla application note before ordering.

Will this change require an engine tune?
A cat-back, axle-back, tip, muffler, or post-catalyst component usually does not require tuning, but confirm the exact application, emissions configuration, oxygen-sensor locations, and local requirements before installation.

What should I inspect before installation?
Check the shipping carton and components against the exact part number, then inspect clamps, hangers, gaskets, mating flanges, clearances, tip alignment, and required reused factory hardware before removing the original exhaust.

Installation Instructions

Follow the current Borla instructions and vehicle service information for this exact part number. Let the exhaust cool, support the vehicle safely, compare all parts before removal, protect sensors and wiring, use the specified clamps and torque values, align all joints and tips without preload, confirm body and suspension clearance, check for leaks, and retorque after the first heat cycles. Professional installation is recommended.